Cummins Emission Solutions Inc.

Cummins Inc.

Xi Wei

Baohua Qi

Martin T Books

Edmund P Hodzen

Mickey R McDaniel

David Samuel Everard

Vivek Anand Sujan

Morgan MacKenzie Andreae

Timothy R Frazier

John N Chi

John M Mulloy

Daniel D Wilhelm

Sriram S Popuri

Terrence M Shaw

Xiao Lin

Indranil Brahma

Divakar Rajamohan

Guoqiang Li

Guoquian Li

Guoquiang Li

A method includes determining whether a urea refill event is detected, and clearing a quality accumulator value and clearing a latching abort command. The method includes determining whether urea fluid quality check abort conditions are met, and clearing the urea quality accumulator, latching the abort command, and exiting the reductant fluid quality check. In response to the abort conditions not being met, incrementing the urea quality accumulator according to an amount of urea being injected, and comparing the accumulated urea quantity to a low test threshold. The method includes, in response to the accumulated urea quantity being greater than the low test threshold, comparing the accumulated urea quantity to a high test threshold, and in response to the urea quantity being greater than the high test threshold, determining whether the a NOexceedance is observed and clearing a urea quality error in response to the NOexceedance not being observed.

System, method, and apparatus for aftertreatment system monitoring

A method includes raising a temperature of an SCR catalyst for a predetermined time period while dosing urea. The method further includes maintaining the temperature of the SCR catalyst without dosing urea for a second predetermined time period. The method further includes filtering out at least low frequency data from a first NOsensor upstream of the SCR catalyst and from a second NOsensor downstream of the SCR catalyst, and comparing the filtered data from the first NOsensor and the second NOsensor without dosing urea over a third predetermined time period. The method further includes providing a NOsensor condition index for at least one of the first NOsensor and the second NOsensor in response to the comparing.

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A system includes a hybrid drive system having an internal combustion engine and a non-combustion motive power source. The system includes an energy storage system and a controller. The controller is structured to functionally execute operations to improve an efficiency of they hybrid drive system. The controller interprets duty cycle data, a boundary condition, and an optimization criterion. The controller further elects a load response operating condition in response to the duty cycle data, the boundary condition, and the optimization criterion. The controller adjusts the operation of the engine and/or the motive power source in response to the elected load response operating condition.

Methods, systems, and apparatuses for driveline load management

A method includes interpreting a powertrain load variation amplitude and an internal combustion engine output profile. The method further includes determining an engine output differential in response to the powertrain load variation amplitude and the internal combustion engine output profile. The method further includes providing an energy accumulator sizing parameter and/or an alternate motive power provider sizing parameter in response to the engine output differential.

A system is provided for controlling an air handling system for an internal combustion engine. A dual-stage turbocharger includes a high-pressure compressor and variable geometry turbine combination fluidly coupled to a low-pressure compressor and variable geometry turbine combination. A control circuit includes a memory having instructions stored therein that are executable by the control circuit to determine a target low-pressure compressor ratio, a target high-pressure compressor ratio, a target high-pressure compressor inlet temperature and a target high-pressure compressor inlet pressure as a function of a target outlet pressure of the high-pressure compressor and a temperature, a pressure and a target flow rate of air entering the air inlet of the low-pressure compressor, and to control the geometries of the low-pressure and high-pressure turbines as a function of the target low-pressure compressor ratio the target high-pressure compressor ratio respectively.

System for controlling an air handling system including a dual-stage variable geometry turbocharger

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Asbury, IA, United States of America

Xi Wei